public async Task Http2GetAsync_TrailingHeaders_NoData_EmptyResponseObserved() { using (Http2LoopbackServer server = Http2LoopbackServer.CreateServer()) using (HttpClient client = new HttpClient(CreateHttpClientHandler(useSocketsHttpHandler: true, useHttp2LoopbackServer: true))) { Task <HttpResponseMessage> sendTask = client.GetAsync(server.Address); await server.EstablishConnectionAsync(); int streamId = await server.ReadRequestHeaderAsync(); // Response header. await server.SendDefaultResponseHeadersAsync(streamId); // No data. // Response trailing headers await server.SendResponseHeadersAsync(streamId, isTrailingHeader : true, headers : s_trailingHeaders); HttpResponseMessage response = await sendTask; Assert.Equal(HttpStatusCode.OK, response.StatusCode); Assert.Equal <byte>(Array.Empty <byte>(), await response.Content.ReadAsByteArrayAsync()); Assert.Contains("amazingtrailer", response.TrailingHeaders.GetValues("MyCoolTrailerHeader")); Assert.Contains("World", response.TrailingHeaders.GetValues("Hello")); } }